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Transaction Verification

    Transaction verification ensures that a transaction is legitimate, unaltered, and confirmed by a third party. Transaction verification includes checking the validity of a transaction’s signature, input values, and output values. There are two ways to verify transactions: a direct examination of the blockchain or using external services that provide verified data from the blockchain. In general, transactions must be valid to be included in a block and added to the blockchain. Invalid transactions (known as “orphaned” or “stale” blocks) may exist on the network, but they will not be considered part of the official chain.